Seastar Solutions Optimus 360 Installation Manual page 45

PORT
ENGINE
STBD
ENGINE
Figure 7-8. Yamaha EST – CAN2 interconnection, single station, twin engine.
© 2014 SeaStar Solutions
7.3 Yamaha EST Gateway & Optimus 360
Interconnection
The Yamaha DEC (Digital Electronic Control) shift and throttle system
connects to the Optimus 360 system through the EST Gateway, using
the harness CM20023. The gateway in turn connects to the Optimus
360 CAN1 and CAN2 networks, the Yamaha Command Link or Command
Link Plus network, and the PCM ignition, through the same harness.
Figure 7-8 and figure 7-9 show the interconnections for single and dual
station implementations. Although the figures show twin engine
configurations, the Optimus and gateway connections are identical
for a triple engine boat. You may need to add additional Command
Link/Plus hubs if there is no port available to connect the gateway
harness. Refer to the Yamaha documentation for part numbers.
The gateway harness has two purple ignition leads to provide the
ignition-on signal to the PCM. Splice them to the two purple ignition
leads on the PCM CAN2 harness CM20304. It is not important which
wire connects to which, only that both are connected. (If this is a retrofit
to an existing Optimus steering system, leave the existing ignition
connection as is and ignore the purple wires on the gateway harness.)
Use crimped Molex Perma-Seal (or equivalent) butt splice connectors,
or shrink-sealed solder connections. Locate all splices in a dry location
and secure them properly against mechanical damage.
CM204XX
PURPLE x 2
PCM
COMMAND
LINK / PLUS
HUB(S)
TERMINATOR
CM10051
TEE
CONTROL
CM10060
HEAD 1
P_LPS S_LPS
PORT STBD
LPS
DEC DEC
GATEWAY
ECM ECM
Optimus 360 Installation Supplement, Rev. B
CM21702
CM204XX
COLOR
CANtrak 1
HELM JOYSTICK
1 1
BUZZER
CM100XX
TERMINATOR
CM10052
CM20064
CM20023
CERTIFIED
AUTOPILOT
(Optional)
CM21504
OPTIMUS CAN2
OPTIMUS CAN1
IGNITION
CM20023
EXISTING YAMAHA
HARNESS
7-7